Trusted power, everywhere
With class-leading reliability and availability, the SGT-A35 is your proven, dependable choice in power generation and mechanical drive applications. It is qualified to meet the stringent standards of the oil and gas industry and has earned a solid reputation in both onshore and offshore service.The SGT-A35 fleet has matured over 46 million hours in service. This gas turbine variant is the latest evolution in a portfolio continuously improved over 40 years of technology development. Utilizing components already proven in industrial, marine and aerospace service, the SGT-A35 offers class-leading power density for power generation and mechanical drive applications. The efficient SGT-A35 gas turbine is integrated in a compact, lightweight and highly maintainable package designed for oil and gas applications.
Highlights of the SGT-A35 gas turbine
The SGT-A35 portfolio includes 2 variants of gas generators and 3 variants of free power turbines, allowing multiple combinations with power output ranging between 32 and 38 MW in mechanical drive, and different drive-shaft speed. Each variant is available with or without Dry Low Emissions (DLE) combustion and can be configured for electrical generation or mechanical drive, onshore or offshore. Such a diverse portfolio ensures that the gas turbine can be ideally matched to your requirements of each application.
The SGT-A35 has earned the trust of operators in a large spectrum of applications, in the power industry as well as in oil and gas. The SGT-A35 legacy spans over 40 years of continuous improvement through the incremental injection of aero engine technology. Over 850 SGT-A35 units have been sold to date, accumulating a service experience of over 46 million operating hours. The SGT-A35 is regarded as a class leader for reliability.
All variants of the SGT-A35 can be restarted at any time following a shutdown from any condition, without any delay due to "hot lockout" conditions. Unlike some of its competitors, the SGT-A35 can achieve this reliably by inherent design. Thanks to its agile twin-spool architecture, the SGT-A35 provides the most robust solution to restoring power quickly when its availability is most critical.
The SGT-A35 is the latest evolution in the portfolio, introducing a synchronous speed variant to the existing highspeed power turbine coupled to the prove gas generator to allow direct drive or geared drive of an electrical generator.
The SGT-A35 can also be utilized in mechanical drive applications, making it one of the most flexible gas turbines in its range. Its performance is optimized for hot climates, delivering significantly more power at 30 °C than its predecessors.
The SGT-A35 brings to oil and gas operators the trusted technologies acquired by Siemens Energy aeroderivative gas turbine portfolio. The reliable SGT-A35 gas turbines, with over 800 units supporting oil and gas operations worldwide, are now packaged with the oil and gas expertise of Siemens Energy, which has supplied over 1,000 units to the oil and gas industry over the years.
The SGT-A35 package leverages the best designs and know-how of two trusted names in the oil and gas industry to produce superior customer value.
Ingenious design to the core
The SGT-A35 uses an aeroderivative, 2-spool gas generator aerodynamically coupled to a free power turbine. Two variants of gas generators and two variants of power turbines are available to perfectly match your requirements in each application.
The 2-spool architecture allows maximum operational flexibility, resulting in a gas turbine with high tolerance to transient excursions and challenging mission cycles, fast starting and with no "hot lockouts". All variants can operate on gaseous and liquid fuel, and can be configured with an optional Dry Low Emission (DLE) combustor.
SGT-A35 package
Fit-for-purpose packaging features, and configurable options have been demonstrated across various oil and gas applications. Choices in mechanical systems, instrumentation, electrical devices, and materials cater to a range of international and API standards, environmental conditions, facility cooling schemes, and availability requirements.
SGT-A35 package: optimized for offshore
The lightweight SGT-A35 gas turbine is integrated into the compact package, proven in offshore oil and gas applications.
The result is a product that offers you a minimal footprint and the highest power density in its class to maximize production while reducing topside weight; therefore lowering upfront capital investment and increasing long-term value creation.
All this while preserving the reliability of designs proven in service and compliant to the requirements of offshore oil and gas applications, including floating production, storage and offloading (FPSO) vessels.
Comprehensive services to support you
Our comprehensive portfolio of services provides low life cycle cost and optimum performance throughout the turbine’s life cycle: Long Term Programs (LTP), overhaul service, field service, spare parts, service exchange, remote diagnostic service, and modernization and upgrades.
Whether for scheduled service or short-term support, our specialists are there for you, on-site all over the world.
Maintenance of the SGT-A35 engine can be accomplished quickly and easily due to the aero engine design.
High fuel flexibility for a broad application range
The SGT-A35 is a dual-fuel gas turbine, capable of operating on gaseous and liquid fuels and enabling an automatic changeover between these two fuels while running as required.
A broad variety of gaseous and liquid fuels can be utilized. In particular, the SGT-A35 has been tested with an extended range of gaseous fuel compositions with high proportions of inert gases, as found in several applications such as deep sea offshore. Through a dedicated engine test program, the SGT-A35 has demonstrated operation with gaseous fuels containing as much as 50% inert gas by volume. Equipped with WLE burners, the engine is capable to burn up to 100 vol% of hydrogen (H2). With DLE burners, the hydrogen capability is up to 15 vol%.
A Dry Low Emission (DLE) option is available for all variants of the SGT-A35.
Performance data for simple cycle power generation
All performance values are based on standard design, ISO ambient conditions and natural gas fuel. No intake or exhaust loss.
*Other fuels on request. Automatic changeover from primary to secondary fuel at any load
**NOₓ emissions at 15% O₂ on fuel gas (with DLE)
Performance data for combined cycle power generation
All performance values are based on standard design, ISO ambient conditions and natural gas fuel. No intake or exhaust loss.
All combined cycle performance is based on 2 pressure, no reheat.
Performance data for mechanical drive
All performance values are based on standard design, ISO ambient conditions and natural gas fuel. No intake or exhaust loss.
*Other fuels on request. Automatic changeover from primary to secondary fuel at any load
**NOₓ emissions at 15% O₂ on fuel gas (with DLE)
